0.10.6

Tests/ArchiveSyncPaginationTests.swift

@@ -0,0 +1,90 @@
+import XCTest
+@testable import Luma
+
+final class ArchiveSyncPaginationTests: XCTestCase {
+    func testCompleteResponseFinishesEvenWhenCursorExists() {
+        var pagination = ArchiveSyncPagination()
+
+        XCTAssertEqual(
+            pagination.decision(
+                complete: true,
+                lastCursor: "server-last",
+                requestedAfter: nil
+            ),
+            .finished
+        )
+    }
+
+    func testIncompleteResponseContinuesWithNewCursor() {
+        var pagination = ArchiveSyncPagination()
+
+        XCTAssertEqual(
+            pagination.decision(
+                complete: false,
+                lastCursor: "page-1-last",
+                requestedAfter: nil
+            ),
+            .next("page-1-last")
+        )
+    }
+
+    func testRepeatedCursorStopsPaginationLoop() {
+        var pagination = ArchiveSyncPagination()
+        _ = pagination.decision(
+            complete: false,
+            lastCursor: "repeated",
+            requestedAfter: nil
+        )
+
+        XCTAssertEqual(
+            pagination.decision(
+                complete: false,
+                lastCursor: "repeated",
+                requestedAfter: "repeated"
+            ),
+            .invalidCursor
+        )
+    }
+
+    func testCursorCycleStopsPaginationLoop() {
+        var pagination = ArchiveSyncPagination()
+        XCTAssertEqual(
+            pagination.decision(
+                complete: false,
+                lastCursor: "page-a",
+                requestedAfter: nil
+            ),
+            .next("page-a")
+        )
+        XCTAssertEqual(
+            pagination.decision(
+                complete: false,
+                lastCursor: "page-b",
+                requestedAfter: "page-a"
+            ),
+            .next("page-b")
+        )
+
+        XCTAssertEqual(
+            pagination.decision(
+                complete: false,
+                lastCursor: "page-a",
+                requestedAfter: "page-b"
+            ),
+            .invalidCursor
+        )
+    }
+
+    func testIncompleteResponseWithoutCursorDoesNotAdvanceCheckpoint() {
+        var pagination = ArchiveSyncPagination()
+
+        XCTAssertEqual(
+            pagination.decision(
+                complete: false,
+                lastCursor: nil,
+                requestedAfter: nil
+            ),
+            .invalidCursor
+        )
+    }
+}